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package projeto.voztg.pkg2.pkg0;

/**
 *
 * @author nascimento lima
 */
import java.io.File;
import java.io.IOException;
import javax.sound.sampled.AudioFormat;
import javax.sound.sampled.AudioInputStream;
import javax.sound.sampled.AudioSystem;
import javax.sound.sampled.DataLine;
import javax.sound.sampled.FloatControl;
import javax.sound.sampled.LineUnavailableException;
import javax.sound.sampled.SourceDataLine;
import javax.sound.sampled.UnsupportedAudioFileException;
import javax.swing.JOptionPane;

public class SonsThread extends Thread {
    public String filename;
    private Position curPosition;
    private boolean tocando;
    private File soundFile;
    private final int EXTERNAL_BUFFER_SIZE = 524288; // 128Kb 

    enum Position {

        LEFT, RIGHT, NORMAL
    };
 
   


    public SonsThread() {
        curPosition = Position.NORMAL;
        tocando = false;
    }

   

    public void tocaSom(String som) {
        tocando = true;
        filename = som;
        this.start();

    }

    private boolean carregaSom(String caminho) {
        soundFile = new File(caminho);

        if (!soundFile.exists()) {
            JOptionPane.showMessageDialog(null, "Arquivo não encontrado: " + filename);
            tocando = false;

            return false;
        }

        return true;
    }

    
    @Override
    public void run() {
        // private void toca() { 
        boolean verArquivoExiste = carregaSom(filename);
        if (verArquivoExiste == false) {

            return;
        }

        AudioInputStream audioInputStream;
        try {
            audioInputStream = AudioSystem.getAudioInputStream(soundFile);
        } catch (UnsupportedAudioFileException | IOException e1) {
            return;
        }

        AudioFormat format = audioInputStream.getFormat();
        SourceDataLine auline;
        DataLine.Info info = new DataLine.Info(SourceDataLine.class, format);

        try {
            auline = (SourceDataLine) AudioSystem.getLine(info);
            auline.open(format);
        } catch (LineUnavailableException e) {
            return;
        } catch (Exception e) {
            return;
        }

        if (auline.isControlSupported(FloatControl.Type.PAN)) {
            FloatControl pan = (FloatControl) auline.getControl(FloatControl.Type.PAN);
            if (curPosition == Position.RIGHT) {
                pan.setValue(1.0f);
            } else if (curPosition == Position.LEFT) {
                pan.setValue(-1.0f);
            }
        }

        auline.start();
        int nBytesRead = 0;
        byte[] abData = new byte[EXTERNAL_BUFFER_SIZE];

        try {
            while (nBytesRead != -1) {
                nBytesRead = audioInputStream.read(abData, 0, abData.length);
                if (nBytesRead >= 0) {
                    auline.write(abData, 0, nBytesRead);
                }
            }
        } catch (IOException e) {
            
        } finally {
            tocando = false;
            auline.drain();
            auline.close();
         }

    }

    public boolean isTocando() {
        return tocando;
    }
     
   
}
